Which function do the stomata perform in photosynthesis?

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Answered by GPT-5 mini AI
Stomata provide the pores for gas exchange in leaves: they let CO2 enter (needed for the Calvin cycle) and allow O2 (a photosynthetic byproduct) to leave. By opening and closing (via guard cells) they also regulate water loss (transpiration), which indirectly affects water and nutrient supply for photosynthesis.